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avatar Ubuntu

How to properly install Temurin JDK with update-alternatives

gb flag
poqdavid

I wanted to install Temurin JDK both 8 and 11, I installed them by these steps

wget https://github.com/adoptium/temurin8-binaries/releases/download/jdk8u312-b07/OpenJDK8U-jdk_x64_linux_hotspot_8u312b07.tar.gz
tar xzf OpenJDK8U-jdk_x64_linux_hotspot_8u312b07.tar.gz

sudo mv jdk8u312-b07/  /usr/lib/jvm/temurinjdk-8-hotspot-amd64

sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/temurinjdk-8-hotspot-amd64/bin/java" 1081
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/temurinjdk-8-hotspot-amd64/bin/javac" 1081

But I am not sure if this is 100% right and how do I generate .jinfo file is that even needed?

1024
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gb flag
poqdavid
@TBr well there is and it just says do `export PATH=$PWD/jdk8u312-b07/bin:$PATH` and doesnt say anything about update-alternatives option which i like to use
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Score:6
BuZZ-dEE avatar Ubuntu
us flag
BuZZ-dEE

You can use the Adoptium Debian / Ubuntu repository

  1. Add the Eclipse Adoptium GPG key

    wget -O - https://packages.adoptium.net/artifactory/api/gpg/key/public | sudo apt-key add -

  2. Add the Eclipse Adoptium apt repository

    echo "deb https://packages.adoptium.net/artifactory/deb $(awk -F= '/^VERSION_CODENAME/{print$2}' /etc/os-release) main" | sudo tee /etc/apt/sources.list.d/adoptium.list

  3. Install the Temurin version you require

    sudo apt update # update if you haven't already
sudo apt install temurin-8-jdk
sudo apt install temurin-17-jdk

  4. Configure the default version

    sudo update-alternatives --config java
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Aubergine avatar
gb flag
Aubergine
E: The repository 'https://packages.adoptium.net/artifactory/deb una Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.
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Corbell avatar
sa flag
Corbell
The Adoptium procedure fails at nearly every steup on Ubuntu Server 22.04.2 LTS (running in AWS). The error given in the comment above occurs, and also before that the warning 'Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)). E: This command can only be used by root.' followed by 'W: GPG error: https://packages.adoptium.net/artifactory/deb jammy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ...'
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Score:1
avatar Ubuntu
mu flag
Milan Majer

I extracted script from original AdoptOpenJDK deb package and modified version I use like:

wget https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.1%2B12/OpenJDK17U-jdk_x64_linux_hotspot_17.0.1_12.tar.gz

mkdir -p /usr/lib/jvm

sudo tar -xvvf OpenJDK17U-jdk_x64_linux_hotspot_17.0.1_12.tar.gz -C /usr/lib/jvm/

sudo ./java-alternative install /usr/lib/jvm/jdk-17.0.1+12
sudo ./java-alternative set /usr/lib/jvm/jdk-17.0.1+12
…
sudo ./java-alternative remove /usr/lib/jvm/jdk-17.0.1+12

Source code of script:

#!/bin/sh

set -eu

priority=2222
#jdk_base_dir=/usr/lib/jvm/adoptopenjdk-11-hotspot-amd64
#jdk_base_dir=/usr/lib/jvm/jdk-17.0.1+12
jdk_base_dir="$2"

if [ ! -d "$jdk_base_dir" ]
then
    echo "Invalid java directory. Choose one of: ";
    ls -1d /usr/lib/jvm/*
    exit
fi

tools="jaotc jar jarsigner java javac javadoc javap jcmd jconsole jdb jdeprscan jdeps jfr jhsdb jimage jinfo jjs jlink jmap jmod jps jrunscript jshell jstack jstat jstatd keytool pack200 rmic rmid rmiregistry serialver unpack200 jexec jspawnhelper"

case "$1" in
install)
    for tool in $tools ; do
        for tool_path in "$jdk_base_dir/bin/$tool" "$jdk_base_dir/lib/$tool" ; do
            if [ ! -e "$tool_path" ]; then
                continue
            fi

            slave=""
            tool_man_path="$jdk_base_dir/man/man1/$tool.1"
            if [ -e "$tool_man_path" ]; then
                slave="--slave /usr/share/man/man1/$tool.1 $tool.1 $tool_man_path"
            fi

            update-alternatives \
                --install \
                "/usr/bin/$tool" \
                "$tool" \
                "$tool_path" \
                "$priority" \
                $slave
        done
    done
;;
remove)
    for tool in $tools ; do
        for tool_path in "$jdk_base_dir/bin/$tool" "$jdk_base_dir/lib/$tool" ; do
            if [ ! -e "$tool_path" ]; then
                continue
            fi

            update-alternatives \
                --remove \
                "$tool" \
                "$tool_path"
        done
    done
;;
set)
    for tool in $tools ; do
        for tool_path in "$jdk_base_dir/bin/$tool" "$jdk_base_dir/lib/$tool" ; do
            if [ ! -e "$tool_path" ]; then
                continue
            fi

            update-alternatives \
                --set \
                "$tool" \
                "$tool_path"
        done
    done
;;
esac
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gb flag
poqdavid
Does this work with any SDK version like from 8 to 17?
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